Yes, it a powerful message, because all full times carers know the situation, but don't want to think too much about the future.
Yes it's sad, but dementia is appalling.
It's a useful tool to try and explain, without the nasty side being shown.
No advert can really get across to someone who isn't a full time emotional investor in the family suffering on a daily basis what is the reality of the pain, hurt, helplessness, the everyday reminder through things like non-recognition, incontinence, etc etc.
When a diagnosis is given the doctor and/or nurse never say that the PWD has a terminal illness and I think they should say this to the family, but not necessarily to the PWD who is in shock (as well may be the family too).
Too many people do not fully understand the illness, the living hell that awaits. Nearly all the info and adverts never seem to be that bad. They lie, and mention living well with dementia. Dementia eats the sufferer and the family bit by bit - there is NO living well with a terminal illness, just an attitude to help the acceptability.
Unfortunately for me, I thought too much about it. I had to have counselling for anticipatory grief. It helped a bit, but doesn't take away the knowing what's going to happen. You can never un-know it.